UNLABELLED: With biodiversity research activities being increasingly shifted to the web, the need for a system of persistent and stable identifiers for physical collection objects becomes increasingly pressing. The Consortium of European Taxonomic Facilities agreed on a common system of HTTP-URI-based stable identifiers which is now rolled out to its member organizations. The system follows Linked Open Data principles and implements redirection mechanisms to human-readable and machine-readable representations of specimens facilitating seamless integration into the growing semantic web. The implementation of stable identifiers across collection organizations is supported with open source provider software scripts, best practices documentations and recommendations for RDF metadata elements facilitating harmonized access to collection information in web portals. DATABASE URL: : http://cetaf.org/cetaf-stable-identifiers.

Biodiversity Informatics and Spatial Analysis Royal Botanic Gardens Kew London UK

Botanic Garden and Botanical Museum Berlin Freie Universität Berlin Berlin Germany

Botanic Garden Meise Meise Belgium

CETAF Consortium of European Taxonomic Facilities Brussels Belgium

Department of Botany Faculty of Science Charles University Praha Czech Republic

Department of Life Sciences The Natural History Museum UK

Finnish Museum of Natural History University of Helsinki Helsinki Finland

Institute of Botany Plant Science and Biodiversity Center Slovak Academy of Sciences Bratislava Slovakia

Museum für Naturkunde Berlin Leibniz Institute for Evolution and Biodiversity Berlin Germany

Museum National d'Histoire Naturelle Paris Paris France

Naturalis Biodiversity Center Leiden The Netherlands

Royal Botanic Garden Edinburgh Edinburgh UK

SNSB IT Center Staatliche Naturwissenschaftliche Sammlungen Bayerns München Germany

Nature. 2017 May 31;546(7656):33. doi: 10.1038/546033d. PubMed

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